Machine for making cement and the like blocks.



S. DEARDS.

MACHINE FOR MAKING CEMENT AND THE LIKE BLOCKS.

I APPLICATION FILED 0CT.8, I915.

3 SHEETSSHEET I.

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S. DEARDS. MACHlNE FOR MAKING CEMENT AND THE LIKE BLOCKS.

APPLICATION FILED 0CT.8. 1915.

Llfi fi Patented Dec. 28, 1915.

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AT-roRA/E S. DEARDS. MACHINE FOR MAKING CEMENT AND THE UKE BLOCKS.

APPLICATION FILED 0CT.B, 1915.

Patented Dec. 28, 1915.

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lJNTT @TATES PATENT SAM DEARD$, OF HARLOVJ', ENGLAND.

TIIACHINE FOR HEARING CEMENT AND THE LIKE BLOCKS.

Application filed October 8, 1915.

To all whom it may concern:

Be it known that I, SAM DEARDS, a citizen of the United Kingdom of Great Britain and Ireland, and resident of West House, The Broadway, Harlow, Essex, England, have invented certain new and useful Improvements in or Relating to Machines for Making Cement and the like Blocks, of which the following is a specification, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a machine for making compressed stone and the like blocks for general building purposes and refers particularly to that type of machine in which the mold box is placed on an adjustable table or platform below a press which is lowered on to the contents of the box so as to compress the said contents therein.

In the improved machine in order to facilitate the movement of the boxes to either or both sides of the table I furnish vertically movable brackets having what I may i call a sliding motion on the frame support ing the table and upon the brackets I may mount the side beds so that when the table is adjusted, the brackets, and with them the side beds, may be accordingly adjusted to lie in the plane to which the table is adjusted.

Another feature of my invention is the provision of shock absorbing stops on either or both the platform or platforms and the mold box or mold boxes said stops serving to prevent the said mixture being damaged by hard impacts which would occur if ordinary stops were used.

These and other features of the invention will now be described with reference to the accompanying drawings which illustrate two forms of block-making machines with my invention applied thereto.

Figure 1 is the front, elevation of a hand operated machine. Fig. 2 is a section on line A-.B of Fig. 1. Figs. 3 and 4 illustrate a power driven bloclemaking machine in side elevation and front elevation respectively.

Referring to Figs. 1 and 2, a is the frame of the machine carrying a table or platform 6 which is carried by a screw spindle b threaded in a bearing Z)", and adapted to be raised and lowered by rotating it with the spindle to move the latter vertically in its r Specification of Letters Patent.

Patented Dec. 2%, H915.

Serial No. 54,855.

The mold boxes 0 are adapted to run on rails (Z and to be brought underneath a press or die 6 which is operated by an eccentric f through the medium of a hand wheel 9 and suitable gear wheels 72.. As will be seen from Fig. 1 the die 6, moving in the usual guides i is provided with a short link 9' having a flat head 70. Between this head and the strap of the eccentric the usual resilient means which are adapted to give should the box be too full thereby preventing undue strain being placed on the press, are arranged. The resilient means comprise flat helical springs which are arranged around a number of pins or bolts m which are screwed into the strap and adapted to slide through holes in the head 7c.

Side beds n are arranged on the machine and are carried by or integral with brackets 0 which are adapted to slide on guides p and to be raised or lowered with the table 6 when the latter is to be adjusted for making blocks of different thicknesses. The said brackets are fixed in their desired positions by means of set screws The machine is adapted for work with two mold boxes which run on wheels or rollers over the rails d of the table and rails r on the side beds. WVhen one of the boxes is being acted upon by the press the other is resting on one of the side beds to be filled with the material. Stops s are provided on the platforms to arrest the boxes in their proper positions. These stops are adapted to cooperate with resilient stops underneath the boxes. The resilient stops are formed by a bracket t through which a pin with two heads or plates is adapted to slide the concussion being absorbed by springs u interposed between the bracket and the plates.

The machine shown in Figs. 3 and 4c is of a similar character to the one just de scribed but is of a heavier construction and adapted to be driven by power. part of the frame 1 carries the usual table 2 on which the rails 3 for the mold boxes 4: are arranged while the back of the frame is extended upwardly and is bent over to provide roller bearing brackets for the plungers 5 by means of which the die 6 is raised and lowered. A shaft 7 on which a fast and a loose pulley 8 are mounted drives a shaft 9 by means of a suitable gear 10. A crank and connecting rod on shaft 9 operate the hammer 11 which is pivoted at 12 nea the op of the mach ne Thi mmer The lower is working continually. A hand lever 13 and link 14 are adapted to lower the die into position after a mold box has been placed underneath, preparatorily to the final blow by the hammer. The die is heated with steam by means of a flexible pipe 6*.

At the lower endof the plungers 5 a plate 15 is arranged which carries a pivoted hammer lever16 which, after the die is in position, is turned so as to take up a position underneath the hammer head and to receive the blow or blows which will compress the material in the mold box. The movement of this lever is effected by a treadle 17, connecting rod 18 and levers 19 and 20 of which the latter is adjustable.

The different thicknesses of blocks is brought about by the interposition of packing pieces 21 between the die and the plate 15 and the springs 22 for absorbing the concussion which may arise from an excessive pressure are arranged between the said plate 15 and another plate 23 having ribs 24 destined to maintain a certain distance between the plate 23 and the packing pieces (or the die if no packing pieces are used) so as to enable the heads of the bolts 25 which are passed through the springs and plate 23 to move under the impact.

The mold boxes may be substantially of the same kind as those previously referred to and as shown in Fig. 3 or they may be rendered resilient in the manner shown in lfiig. 4 in which the axles of the wheels are carried by levers or bars 26 adapted to slide on pins or bolts 27 which are fixed to the underside of the mold box. Springs 28 which are interposed between the said box and the ends of the levers 26 around the pins 27 serve to absorb shocks which may be caused by excessive pressure on the material in the box.

The stops 29 and 30 are shown to be of the same kind as the stops 8, t, and u in Fig. 1 but it is evident that they may be of a different construction for example one in which plate springs are used instead of spiral springs.

If desired the springs, although they are preferred may be dispensed with and blocks of resilient material used instead and I wish it to be understood that I do not limit myself to the exact construction of the parts forming my invention as shown in the drawings, but that I may make various alterations within the scope of the following claims.

The term compressed stone block is intended to cover a block which is usually a mixture of sand and cement say in the proportions of 3 to 1, or sand, gravel and cement in the proportions of 3, 2. and 1. This class of block must not be confused with concrete block, because the compressed stone is of a nature which binds together and can be hanframe whereby on rotation of the table the same will be moved vertically, brackets vertically adjustable on opposite sides of the frame, platforms on the brackets, tracks on the table and platforms, a mold box mounted on the tracks for movement. a the o er the table, and means for operating the die.

2. A machine for making compressed stone or like blocks comprising a table means for adiusting said table, a mold box movable on said table, a die, means for actuating said die to operate on the material in said mold box, side platforms on to which the mold box is movable from the table arranged adjacent to said table, and means adjustably supporting said platforms to lie in the plane with the table to permit of movement of the box, as aforesaid.

3. A machine for making compressed stone or like blocks comprising a frame. a rotatable table, a screw spindle carried by the table and threadedly engaged with the frame whereby on rotation of the table the same will be moved vertically, brackets vertically adjustable on opposite sides of the frame. platforms on the brackets tracks on the table and platforms, a mold box mounted on the tracks for movement, stops on the table and platform, a yieldable stop on the mold box adapted to abut the stops on the table and platform, a die over the table, and means for operating the die.

4. In a machine for making compressed stone or like blocks, a frame, a mold box, a die for the mold box, a hammer pivoted to the frame means for operating the hammer, a hammer lever pivoted to the die and adapted to be moved to and from a position in the path of the hammer, and means for moving the hammer lever.

5. In a machine for making compressed stone or like blocks, a frame, a mold box. a die for the mold box, a hammer pivoted to the frame, means for operatingthe hammer, a hammer lever pivoted to the die and adapted to be moved to and from a position in the path of the hammer. a foot lever, and an adjustable connection between the foot lever and hammer lever for moving the latter.

6. In a machine for making compressed stone or like blocks, a f ame, a mold box thereon, a die for the mold box, a vertically slidable plunger, a plate carried by the plunger, resilient means supporting the die from the plate, manual means for lowering the die toward the mold box, and a hammer adapted to be swung into and from the path for operating the die. of the hammer, and means for swinging the 7. In a machine for making compressed hammer lever.

stone or like blocks, a frame, a mold box In Witness whereof I have hereunto set thereon, a die for the mold box, a vertically my hand in presence of tWo Witnesses.

slidable plunger a plate carried by the plunger, resilient means supporting the die SAM DEARDS' from the plate, manual means for lowering Witnesses: the die toward the mold box, a hammer, a HENRY FAIRBROTHER, 10 hammer lever pivoted to the plate and JAMEs THOMSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. 

